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Cheap flights from Ontario (ONT) to Missouri from $70

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
ONT — STL
Jun 11 — Jun 181
From?
To?
Tue 6/11
Tue 6/18
1 adult, Economy
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How far in advance should I book a flight from Ontario to Missouri?

Travelers have found it’s best to book a flight 48 days in advance to save up to 128% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 48 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Ontario to Missouri 1-2 weeks in advance for as low as $480, or $628 for flights within the next 24 hours.

What is the cheapest month to fly from Ontario to Missouri?

Flights from Ontario to Missouri lean towards being more expensive in July. Prices are generally better when you fly from Ontario to Missouri in January, with the cheapest ticket starting at $215.

What is the cheapest time of day to fly from ONT to MO?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Missouri as you normally would.

Cheap Ontario to Missouri flights in June & July 2024

Find cheap flight options from Ontario to Missouri specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,050,429 searches. Prices were last updated on June 6, 2024.
Check out some of the best flight deals from Ontario to Missouri in 2024. Check back in a little while for more flight options.
Thu 6/1310:29 pmONT - STL
1 stop11h 25mFrontier
Sat 6/157:29 pmSTL - ONT
1 stop13h 34mFrontier
Deal found 6/5$144
Fri 6/1412:44 amONT - STL
1 stop6h 45mFrontier
Thu 6/207:29 pmSTL - ONT
1 stop23h 39mFrontier
Deal found 6/6$169
Sun 6/97:23 pmONT - STL
2 stops24h 36mFrontier
Thu 6/137:29 pmSTL - ONT
1 stop15h 35mFrontier
Deal found 6/5$170
Mon 6/1012:59 amONT - MCI
1 stop5h 16mFrontier
Tue 6/187:44 pmMCI - ONT
1 stop13h 18mFrontier
Deal found 6/4$170
Sun 6/99:40 pmONT - STL
2 stops22h 19mFrontier
Tue 6/113:47 pmSTL - ONT
1 stop17h 15mFrontier
Deal found 6/5$172
Wed 6/128:03 amONT - MCI
1 stop9h 13mFrontier
Sat 6/158:41 amMCI - ONT
1 stop17h 08mFrontier
Deal found 6/5$172
Sun 6/2312:59 amONT - STL
1 stop6h 30mFrontier
Fri 6/285:36 pmSTL - ONT
1 stop5h 47mFrontier
Deal found 6/4$173
Wed 6/128:03 amONT - MCI
1 stop9h 13mFrontier
Sat 6/158:41 amMCI - ONT
1 stop17h 08mFrontier
Deal found 6/5$173
Wed 7/2412:49 amONT - STL
1 stop17h 08mFrontier
Fri 8/210:32 pmSTL - ONT
1 stop15h 21mFrontier
Deal found 6/5$175

Ontario to Missouri 2024 flight deals

Discover exclusive flight deals for travel between Ontario and Missouri in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.
Check out some of the best flight deals from Ontario to Missouri in 2024. Check back in a little while for more flight options.
Sun 9/221:10 pmONT - STL
1 stop19h 08mFrontier
Sat 9/287:29 pmSTL - ONT
1 stop15h 37mFrontier
Deal found 6/6$136
Wed 8/1412:49 amONT - STL
1 stop12h 04mFrontier
Tue 8/207:29 pmSTL - ONT
1 stop24h 40mFrontier
Deal found 6/4$137
Wed 8/1412:49 amONT - MCI
1 stop5h 51mFrontier
Tue 8/207:45 pmMCI - ONT
1 stop5h 54mFrontier
Deal found 6/5$138
Fri 8/3012:49 amONT - STL
1 stop6h 48mFrontier
Tue 9/37:29 pmSTL - ONT
1 stop24h 40mFrontier
Deal found 6/6$139
Mon 8/1212:49 amONT - STL
1 stop9h 01mFrontier
Wed 8/148:00 pmSTL - ONT
1 stop5h 39mFrontier
Deal found 6/5$140
Thu 8/1512:49 amONT - MCI
1 stop5h 51mFrontier
Mon 8/197:45 pmMCI - ONT
1 stop18h 47mFrontier
Deal found 6/5$140
Fri 8/168:27 pmONT - MCI
1 stop10h 13mFrontier
Mon 8/197:45 pmMCI - ONT
1 stop18h 47mFrontier
Deal found 6/5$141
Thu 6/1310:29 pmONT - STL
1 stop11h 25mFrontier
Sat 6/157:29 pmSTL - ONT
1 stop13h 34mFrontier
Deal found 6/5$144
Tue 8/208:35 pmONT - STL
1 stop11h 43mFrontier
Fri 8/237:29 pmSTL - ONT
1 stop24h 37mFrontier
Deal found 6/5$150

Ontario to Missouri flights leaving soon

Find last-minute flight options from Ontario to Missouri for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.
Consider one of these great deals we found on last-minute flights from Ontario to Missouri. Users should be sure to double check the price, date, and time of their last-minute flight.
Thu 6/1310:29 pmONT - STL
1 stop11h 25mFrontier
Sat 6/157:29 pmSTL - ONT
1 stop13h 34mFrontier
Deal found 6/5$144
Fri 6/1412:44 amONT - STL
1 stop6h 45mFrontier
Thu 6/207:29 pmSTL - ONT
1 stop23h 39mFrontier
Deal found 6/6$169
Thu 6/1310:29 pmONT - STL
1 stop11h 25mFrontier
Tue 6/187:29 pmSTL - ONT
1 stop15h 35mFrontier
Deal found 6/5$172
Wed 6/128:03 amONT - MCI
1 stop9h 13mFrontier
Sat 6/158:41 amMCI - ONT
1 stop17h 08mFrontier
Deal found 6/5$172
Wed 6/128:03 amONT - MCI
1 stop9h 13mFrontier
Sat 6/158:41 amMCI - ONT
1 stop17h 08mFrontier
Deal found 6/5$173
Thu 6/1310:29 pmONT - STL
1 stop11h 25mFrontier
Fri 6/145:36 pmSTL - ONT
1 stop8h 08mFrontier
Deal found 6/5$181
Fri 6/1410:23 pmONT - STL
1 stop9h 06mFrontier
Sat 6/157:29 pmSTL - ONT
1 stop13h 34mFrontier
Deal found 6/5$186
Fri 6/1410:23 pmONT - STL
1 stop9h 06mFrontier
Mon 7/227:51 pmSTL - ONT
1 stop5h 58mFrontier
Deal found 6/6$189
Fri 6/1410:23 pmONT - STL
1 stop9h 06mFrontier
Sun 7/2110:32 pmSTL - ONT
1 stop12h 26mFrontier
Deal found 6/6$200

One-way flights to Missouri from Ontario

Search for one-way flight options from Ontario to Missouri. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.
Some of the best available deals we've found on one-way flights from Ontario to Missouri. Those seeking round-trip flights from Ontario to Missouri should utilize the search form at the the top of the page.
Fri 10/412:49 amONT - STL
1 stop6h 48mFrontier
Deal found 6/5$70
Tue 8/2012:49 amONT - MCI
1 stop5h 51mFrontier
Deal found 6/5$70
Fri 9/2012:49 amONT - MCI
1 stop5h 51mFrontier
Deal found 6/4$75
Thu 6/1310:29 pmONT - STL
1 stop11h 25mFrontier
Deal found 6/5$76
Wed 8/218:27 pmONT - MCI
1 stop10h 13mFrontier
Deal found 6/5$76
Sat 6/159:44 amONT - MCI
1 stop20h 31mFrontier
Deal found 6/4$80
Sat 9/217:30 amONT - MCI
1 stop23h 10mFrontier
Deal found 6/4$81
Thu 9/512:49 amONT - MCI
1 stop5h 51mFrontier
Deal found 6/5$85
Fri 6/2812:49 amONT - STL
1 stop6h 40mFrontier
Deal found 6/6$89

Find flights from Ontario to Missouri within your budget

Customize your flight search to find flights from Ontario to Missouri that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$136 - $318

Route

Depart

Return

Price

OntarioLambert-St Louis

ONT - STL

ONTSTL

Ontario

Sun 9/22

1 stop19h 08m

Lambert-St Louis

Sat 9/28

1 stop15h 37m

$136

OntarioLambert-St Louis

ONT - STL

ONTSTL

Ontario

Wed 8/14

1 stop12h 04m

Lambert-St Louis

Tue 8/20

1 stop24h 40m

$137

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Wed 8/14

1 stop5h 51m

Kansas City

Tue 8/20

1 stop5h 54m

$138

OntarioLambert-St Louis

ONT - STL

ONTSTL

Ontario

Mon 8/12

1 stop9h 01m

Lambert-St Louis

Wed 8/14

1 stop5h 39m

$140

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Thu 8/15

1 stop5h 51m

Kansas City

Mon 8/19

1 stop18h 47m

$140

OntarioSpringfield-Branson

ONT - SGF

ONTSGF

Ontario

Wed 8/21

1 stop6h 13m

Springfield-Branson

Sat 8/24

1 stop5h 52m

$198

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Tue 7/23

1 stop5h 25m

Kansas City

Tue 7/30

1 stop7h 38m

$296

OntarioKansas City

ONT - MCI

ONTMCI

Ontario

Wed 8/14

1 stop5h 51m

Kansas City

Tue 8/20

2 stops17h 15m

$297

OntarioSpringfield-Branson

ONT - SGF

ONTSGF

Ontario

Fri 8/16

1 stop5h 55m

Springfield-Branson

Tue 8/20

1 stop8h 16m

$318

Flights are sorted by cheapest first

Deals found on 6/6

No data available for this route at this time. Please check back soon.

Best time to book a flight from Ontario to Missouri

Have a flexible travel schedule? Discover the best time to fly to Missouri from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing Missouri

Get insights into the airlines that provide service to Missouri. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Missouri. Reviews last updated June 6, 2024.
Read reviews from past customers who have flown Frontier, Alaska Airlines and American Airlines from Ontario to Missouri. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.1
Very good
9,222 reviews

Food

7.3

Overall

8.1

Crew

8.6

Comfort

7.9

Entertainment

7.3

Boarding

8.2

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Alaska Airlines
8.1
Very good
9,222 reviews
Alaska Airlines
8.1
Very good
9,222 reviews

Food

7.3

Overall

8.1

Crew

8.6

Comfort

7.9

Entertainment

7.3

Boarding

8.2

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Delta
8.0
Very good
10,368 reviews
Alaska Airlines
8.1
Very good
9,222 reviews

Food

7.3

Overall

8.1

Crew

8.6

Comfort

7.9

Entertainment

7.3

Boarding

8.2

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Avianca
7.5
Good
3,599 reviews
Alaska Airlines
8.1
Very good
9,222 reviews

Food

7.3

Overall

8.1

Crew

8.6

Comfort

7.9

Entertainment

7.3

Boarding

8.2

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

United Airlines
7.4
Good
10,696 reviews
Alaska Airlines
8.1
Very good
9,222 reviews

Food

7.3

Overall

8.1

Crew

8.6

Comfort

7.9

Entertainment

7.3

Boarding

8.2

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

American Airlines
7.3
Good
14,227 reviews
Alaska Airlines
8.1
Very good
9,222 reviews

Food

7.3

Overall

8.1

Crew

8.6

Comfort

7.9

Entertainment

7.3

Boarding

8.2

Reviews

1 / 10

Paid a lot for our exit row seats and they weren’t that roomy.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Missouri. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Missouri?

    Located just 3.1 mi from the city center, Ontario (ONT) is the airport most travelers will use when flying to Missouri from Ontario.

  • Can I find flights from Ontario to Missouri for under $200 on Cheapflights?

    Yes, there are multiple flights from Ontario to Missouri for under $200. The cheapest flight booked recently is on Frontier for just $136, but on average you can expect to pay $158.

  • Are there last-minute flights available from Ontario to Missouri for under $200?

    There are currently 20+ open flights from Ontario to Missouri within the next 7 days for less than $200.

  • What are the most popular routes from Ontario to Missouri?

    The most popular route from Ontario to Missouri is Ontario - Lambert-St Louis. You may also consider Ontario - Kansas City or Ontario - Springfield-Branson.

  • What does ONT to STL mean?

    ONT stands for Ontario Airport, while STL stands for Lambert-St Louis Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry. Kansas City Airport (MCI), Springfield-Branson Airport (SGF), Columbia Regional Airport (COU), Kansas City Downtown Airport (MKC), Branson Airport (BKG) are some additional IATA codes for airports related to your trip.

  • Can I find deals for flights from Ontario to Missouri that include extra baggage allowance?

    The amount of baggage you can bring on your Ontario to Missouri flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Ontario to Missouri with specific airlines?

    Yes, Cheapflights allows you to browse and filter Ontario to Missouri flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Ontario to Missouri that include hotel bookings?

    Yes. In addition to deals on Ontario to Missouri flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Missouri?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Missouri.

  • Can I find deals for business class flights from Ontario to Missouri?

    Yes. Cheapflights offers flight deals from Ontario to Missouri by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Ontario to Missouri that allow pets onboard?

    Many airlines flying from Ontario to Missouri offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Ontario to Missouri?

    Yes, you can often find last-minute deals on Ontario to Missouri flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Ontario to Missouri flight deals updated?

    The Ontario to Missouri flight deals you see on this page were last updated on 6/6.

  • What are the most popular airlines that fly from Ontario to Missouri?

    American Airlines, Delta and Frontier are the most popular airlines when flying from Ontario to Missouri.

  • What is the cheapest month to book a flight from Ontario to Missouri?

    Currently, September is the cheapest month in which you can book a flight from Ontario to Missouri (average of $318). Flying from Ontario to Missouri in July is currently the most expensive (average of $365). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Ontario to Missouri
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Top 5 airlines flying from Ontario to Missouri

Discover the top 5 airlines that operate flights from Ontario to Missouri. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 3,050,429 searches. Data last updated June 6, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$105Average$198FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$112Average$234FlexibilityNo cancel feeOn-time65%
DeltaCheapest$147Average$384FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$282Average$527FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$286Average$527FlexibilityNo cancel feeOn-time69%
Boston to Seattle flights
Newark Airport to Cancún flights
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Boston to Toronto flights
Las Vegas to Orlando flights
Orlando to Hawaii flights
New York to Dubai flights
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Orlando to Las Vegas flights
Ontario to Mississippi flights

Search flights from Ontario to Missouri by cabin class

Find flights from Ontario to Missouri, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Hourly flight availability from Ontario to Missouri

Find hourly flight availability from Ontario to Missouri. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 6, 2024.
17%of flight departuresEarly morningMidnight to 6 am
83%of flight departuresMorning6 am to noon
0%of flight departuresAfternoonNoon to 6 pm
0%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

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